Float operated devices
US6174138A · kind A · utility
4Cited by
7References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Sep 22, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A float operated device such as a pressure powered pump has a chamber 30 in which a float 32 is movable. The float 32 has a low profile form, having an aspect ratio greater than 2. The float operates a toggle mechanism 46 comprising an input lever 34 and an output lever 48 which are pivotable about spaced pivot locations 38, 50. A spring 54 acts between the input and output levers 34 and 48 to provide the toggling action. The toggle mechanism operates a valve arrangement 62.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.